JP2002327722A - Spring type locking press pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spring type locking press pin having a small diameter and further improving an usual press pin so as to maintain a merit of a locking device with a cover. SOLUTION: In the spring type locking press pin having a pin forming the locking device with the cover between a button and guide sleeve by penetrating through the guide sleeve in an axial direction and by connecting with the button at the upper end, the locking device is positioned in the button and has a ring- shaped concave portion at least partially opened downward in an axial direction. The guide sleeve is engaged with the ring-shaped concave portion by the force of a spring by means of at least two locking teeth that face each other and form a slot in an axial direction between them. A range of maintaining the spring is positioned in a bore opened downward of the guide sleeve. The bore is positioned in a position lower than the locking device of the spring-type locking press pin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a spring-type lock press pin.

[0002]

2. Description of the Related Art Such a press pin is known, for example, from German Patent No. 9319800 U1 owned by the present applicant.

The press pin shown in this patent has the advantage of having a lock between the guide sleeve and the spindle-shaped button inside. This button
It can be rotated and moved, and a force by a spring is applied to the guide sleeve. Such a locking device with a cover has an advantage that it is hardly affected by external debris. The holding area is arranged radially outward of the covered locking device between the spindle-shaped button and the guide sleeve and extends axially. However, in this case, since the lock device and the spring structure are arranged as a continuous configuration in the radial direction, there is a disadvantage that the outer diameter of the press pin becomes very large.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to further improve a press pin of the type indicated at the outset, so as to have a small outer diameter, while maintaining the advantages of a locking device with a cover. It is.

[0005]

The object on which the invention is based is solved by the subject matter of claim 1. That is, the present invention relates to a spring-type lock press pin including a pin that forms a locking device with a cover between the button and the guide sleeve by being axially penetrated through the guide sleeve and connected to the button at the upper end. Wherein the locking device comprises a ring-shaped recess located in the button and open at least partially downward in the axial direction, the guide sleeves facing each other and forming an axial slot therebetween. 2
The two locking teeth engage the ring-shaped recess by the force of a spring, and the area for holding the spring is located in a downwardly-opened bore in the guide sleeve, and the bore is formed by the spring. The present invention provides a spring-type lock press pin, wherein the spring-type lock press pin is located below the lock device.

[0006] The advantages of the present invention are as follows.
It is obtained by combining the two features.

A first feature is a locking device with a cover, in which a ring-shaped recess which is open at least partially downward in the axial direction is provided in the spindle-shaped button, and particularly easy to assemble.

A second feature of the invention is that the pressure spring is located in a downwardly open bore in the guide sleeve and is supported only by the corresponding shoulder of the retracted pin. As with the first feature, the shoulder has the purpose of facilitating assembly, since it has a larger diameter. This considerably simplifies assembly.

The last feature has the following advantages. That is, the lock device with the cover and the spring structure are continuously formed in the axial direction, and the outer circumference of the press pin is made smaller as a whole.

The modifications of the prior art in which the inner locking device and the outer spring structure are continuously formed in the radial direction are as follows. That is, in the present invention, these two functional elements are continuously arranged in the axial direction or overlapped with each other vertically, whereby the axial length of the press pin is somewhat longer than that of the known press pin. The outer circumference of the press pin is considerably smaller.

Therefore, not only the outer diameter becomes small, but also the assembling becomes easy.

In a preferred embodiment of the invention, the ring-shaped recess is formed by two sleeves of the spindle-shaped button. These ring-shaped recesses are located in the spindle-shaped buttons and hold the locking teeth of the guide sleeve.

Thus, these ring-shaped recesses can be arranged very close to the outer circumference of the spindle-shaped button, whereby the locking device can have a good holding force.

The outer sleeve part covers the locking device and can therefore be formed to have a particularly small width.

In another embodiment, the inner sleeve portion and the outer sleeve portion are connected to each other at the bottom of the button by radial connection fins located at at least two positions opposite each other.

Thus, buttons, usually made of plastic, have good stability. This is because the ring-shaped recess is disposed near the outer periphery, but engages with the lock teeth of the guide sleeve, so that excellent stability is ensured.

When a connecting fin is formed at the bottom of the ring-shaped recess, the ring-shaped recess is closed at two places facing each other via the corresponding connecting fin by using two locking teeth. Accordingly, the connecting fin connects the outer sleeve portion and the inner sleeve portion of the button. With such an arrangement, the two sleeve portions are not distorted, the ring-shaped recess is mechanically very stable under load, and the button is pushed longitudinally towards the engaging guide sleeve. , Can withstand a bending moment even when it is operated at an angle with respect to.

Another advantage results from the continuous arrangement of the locking device and the spring structure. That is, since the spring is arranged separately from the lock device, a large spring-type stroke of the press pin becomes possible.

Therefore, the axial length of the space including the pin can be made very large, and as a result, the advantage that the pin can have a large stroke can be obtained. This is because the connecting fin is formed between the outer sleeve portion and the inner sleeve portion, so that even if the stroke is large, a ring-shaped concave portion that is not stably subjected to distortion is formed in the button.

The assembly is particularly favorable because the internal pins have axial studs with barb-shaped hook-like mounting structures. This mounting structure has a barb-hook-like project.
ions) engages the wall of the longitudinal bore of the button.

Thus, during assembly, the longitudinal bore of the button, usually made of plastic, is simply placed over the surface of the pin mounting structure and the button is hit with the hand, causing the pin to move with the mounting structure. Into the inner wall of the bore, thereby inseparably connecting the button to the pin. Thus, for example, unlike the prior art DE 93 19 800 U1, a connection by means of a retaining ring is not required.

The subject matter of the invention can be obtained not only from the subject matter of the individual claims but also by combining the individual claims.

All details and features expressed in documents, including abstracts, and particularly the spatial illustrations shown in the drawings, are important to the present invention as long as they, individually or in combination, have novelty over the prior art. Is considered to be

The present invention will be described below in detail with reference to the drawings showing only one embodiment. Further, important features and advantages of the invention will be apparent from the drawings and the description.

[0025]

DETAILED DESCRIPTION OF THE INVENTION The spring-loaded press pin according to the invention basically consists of a spindle-shaped button 1 which is usually made of plastic and has a thick top 3 at its upper end, in axial and circumferential directions. To facilitate the operation of the button 1, the top 3 is provided with a notched ring having fine irregularities on its outer periphery.

The buttons are aligned with each other facing each other and mirrored to each other (see FIG. 3).
It has two ring-shaped recesses 6 inside,
The wall of each ring-shaped recess 6 is formed by the wall of the inner sleeve part 5 and the wall of the outer sleeve part 4 facing it.

Each ring-shaped recess 6 is open downward so that the two sleeve parts 4, 5
By the connecting fins 8, the buttons 1 are connected to each other only at two opposing locations on the bottom 7 (see FIG. 3).

The corresponding locking teeth 21, 22 are adapted in shape and engage in two generally semicircular ring-shaped recesses 6 facing each other. The lock teeth are the guide sleeve 14
Is an extension from the upper free end.

The guide sleeves 14 are preferably made of metal parts and extend upwardly facing each other,
Moreover, it has lock teeth 21 and 22 having a substantially semicircular shape.
As shown in FIGS. 2 and 3, the lock teeth 21 and 22 are engaged with the ring-shaped recess 6 with almost no gap in the circumferential direction. Here, the lock teeth 21 and 22 are attached so as to be adjustable in the axial direction.

The locking teeth 21, 22 are circumferentially separated by two axially extending slots 24 facing each other. Lock teeth 21, 22 and guide sleeve 1
A key stud 9 is formed on the guide sleeve 14 below the connection portion with the four main bodies. A shoulder 13 having a smaller diameter is formed below the shoulder 13, and the shoulder 13 serves as a recess for a screw 12 formed thereunder.

An internal axial bore 17 which is open in one direction is formed inside the guide sleeve, and the pin 10 is engaged with the bore. This pin has a thrust piece 11 at the lower open end. The thrust piece 11 enters the bore 17 and becomes invisible when the button 1 is pulled up against the pressure spring 18 disposed in the bore.

The spring 18 has one end supported by an internal stud above the bore 17 and the other end supported by a corresponding shoulder on the stud 15 of the pin 10.

A mounting structure 19 having barbed hook-like studs extends from the pin 16 passing through the guide sleeve 14.

The mounting structure 19 is pushed into and fixed to a bore 20 formed in the longitudinal direction of the button 1.

In assembling, the entire structure shown in FIG. 2 is arranged on a certain surface such that the thrust piece 11 contacts the surface. The longitudinal bore 20 is attached to the mounting structure 19.
The button 1 is placed on the upwardly open pin 16 having the mounting structure 19 so as to contact the pin 1.

Subsequently, the button 1 is quickly moved downward by tapping, thereby pushing the mounting structure 19 into the longitudinal bore 20. Thus, the button 1 and the pin 10 are inseparably connected.

In order to form a locked retracted position of the thrust piece 11, the button 1 is pulled upward against the guide sleeve 14 against the spring force of the pressure spring 18, whereby the locking teeth 21, 22 and The engagement of the button 1 with the corresponding ring-shaped recess 6 is released.

Thus, the button 1 can be pivoted in the circumferential direction, so that the upper regions of the lock teeth 21 and 22 are adjacent to the lower surface of the connecting fin. Thereby, the retracted lock position of the button 1 is configured.

To return to the initial position shown in FIG.
The button 1 is pivoted again with respect to the sleeve 14, whereby the locking teeth 21, 22 are again engaged with the ring-shaped recess 16, and the force of the pressure spring 18 causes the engagement position shown in FIGS. To reach.

An advantage of this construction is that the bore 17 can have a relatively large axial length, and thus the button 1 can be displaced by a large stroke. Therefore, of course, it is necessary to adjust the axial length of the ring-shaped recess 6.

Despite the large stroke, the outer sleeve portion 4 and the inner sleeve portion 5 are connected by the opposed connecting fins 8 described above, so that the configuration of the button 1 is stable.

[Brief description of the drawings]

FIG. 1 is a side view of a press pin according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle-shaped button 4 External sleeve part 5 Inner sleeve part 6 Ring-shaped recessed part 7 Bottom part 8 Connecting fin 10 Pin 14 Guide sleeve 16 Pin 17 Bore 18 Pressure spring 19 Mounting structure 20 Longitudinal bore hole 21 Lock tooth 22 Lock tooth 24 Slot

 ──────────────────────────────────────────────────の Continuation of front page (71) Applicant 502078295 Triberger Str. 3D-78120 Furtwangen Germany (72) Inventor Kientzler Rudorf Germany Day-78120 Furt Wangen Zonharde 38 F-term (reference) 3J037 AA01 BA02 BB01 BB02 CA02

Claims (4)

[Claims] 1. A spring-type lock press pin having a pin that penetrates a guide sleeve in an axial direction and is connected to a button at an upper end to form a locking device with a cover between the button and the guide sleeve. The locking device comprises a ring-shaped recess located in the button and open at least partially downward in the axial direction, the guide sleeves facing each other and forming at least two axial slots therebetween. The two locking teeth engage the ring-shaped recess by the force of a spring, and the area for holding the spring is located in a downwardly-opened bore in the guide sleeve, and the bore is provided with the spring. A spring-type lock press, wherein the lock-type lock press pin is located below the locking device. pin. 2. The two ring-shaped recesses are mirror-inverted with respect to a central axis, and are located radially inward of an outer sleeve portion and radially outward of an inner sleeve portion of the button. The spring-type lock press pin according to claim 1, wherein: 3. The spring-type lock press according to claim 1, wherein the inner sleeve portion and the outer sleeve portion of the button are connected at a bottom portion thereof by connecting fins in a radial direction. pin. 4. The pin according to claim 1, wherein said pin has a mounting structure, said mounting structure being pushed into said longitudinal bore of said button by barb-shaped hook-shaped studs. A spring-type lock press pin according to any one of the above.